Vehicle power unit with improved lubrication oil recovery structure

US20070295159A1Active Publication Date: 2007-12-27HONDA MOTOR CO LTD
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
HONDA MOTOR CO LTD
Publication Date
2007-12-27

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Abstract

A power unit of a vehicle, which includes an internal combustion engine and a transmission, is provided which is configured to quickly return lubricating oil fed to the transmission to an oil storage portion of the power unit case. The transmission includes a gear train housed in a gear chamber, the gear train executing power transmission among an input shaft, an intermediate shaft and an output shaft. The input shaft and the output shaft are arranged such that a line connecting their respective shaft centers extends almost horizontally above a communicating port which permits return oil flow between segregated portions of the power unit case. In addition, the intermediate shaft is disposed above and between the input shaft and the output shaft.
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Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] The present invention claims priority under 35 USC 119 based on Japanese patent application No. 2006-146731, filed on May 26, 2006. The subject matter of this priority document is incorporated by reference herein.BACKGROUND OF THE INVENTION

[0002] 1. Field of the Invention

[0003] The present invention relates to a vehicle power unit, the power unit including an internal combustion engine and a transmission, the transmission modifying the rotational speed of the engine and transmitting the rotational driving force of the engine to vehicle wheels.

[0004] 2. Description of the Background Art

[0005] In a known a vehicle power unit, which includes an internal combustion engine and a transmission, the transmission is configured to include input and output shafts disposed parallel to each other, and to further include a plurality of gear trains arranged between the input and output shafts. Such a power unit is disclosed, for example, in Japanese Patent ...

Claims

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